The term DIRECTION SUFFIX is composed of four crossword solutions: WARD, ERN, EAST, and STIR. WARD is a four-letter word meaning to guard or protect, while ERN is a three-letter word meaning to earn or gain. EAST is a four-letter word referring to the cardinal direction, and STIR is a four-letter word meaning to move or agitate. Together, these words form the phrase 'WARD, earn, EAST, STIR, ' which can be interpreted as a direction suffix, or a set of instructions for how to proceed.